android - 将图片从图库上传到android中的服务器

Question

我正在创建一个安卓应用。我需要实现一个代码，用于从图库或通过从相机捕获上传个人资料图片。单击要上传图片的部分将显示警告。它由三个选项组成，一个是从相机拍摄，一个是从画廊拍摄，一个是取消。我可以成功当我尝试从图库上传图片时，从相机购买的图像中捕获的图像出现此错误

E/MainActivity: Response from server: java.io.FileNotFoundException: /storage/emulated/0/Pictures/Upload/IMG_20170227_142713.jpg (No such file or directory)

这是我用来提醒构建器显示选项以及打开图片库或启动相机的代码

//code to choose profile pic
    iv.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            /*Toast.makeText(getApplicationContext(),
                    "Please choose a photo", Toast.LENGTH_LONG)
                    .show();*/
            final CharSequence[] items = { "Take Photo", "Choose from Library",
                    "Cancel" };

            AlertDialog.Builder builder = new AlertDialog.Builder(LeftMenusMediaActivity.this);
            builder.setTitle("Add Photo!");
            builder.setItems(items,new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int item) {


                    if (items[item].equals("Take Photo")) {

                        //define the file-name to save photo taken by Camera activity
                        String fileName = "new-photo-name.jpg";
                        //create parameters for Intent with filename
                        ContentValues values = new ContentValues();
                        values.put(MediaStore.Images.Media.TITLE, fileName);
                        values.put(MediaStore.Images.Media.DESCRIPTION,"Image captured by camera");
                        //imageUri is the current activity attribute, define and save it for later usage (also in onSaveInstanceState)
                        imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
                        //create new Intent
                        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                        imageUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);

                        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

                        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
                        startActivityForResult(intent, PICK_Camera_IMAGE);




                    } else if (items[item].equals("Choose from Library")) {


                        try {
                            Intent gintent = new Intent();
                            gintent.setType("image/*");
                            gintent.setAction(Intent.ACTION_GET_CONTENT);

                            startActivityForResult(
                                    Intent.createChooser(gintent, "Select Picture"),
                                    PICK_IMAGE);
                        } catch (Exception e) {
                            Toast.makeText(getApplicationContext(),
                                    e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                            Log.e(e.getClass().getName(), e.getMessage(), e);
                        }



                    } else if (items[item].equals("Cancel")) {
                        dialog.dismiss();
                    }
                }
            });
            builder.show();
        }
    });

这是我的onActivity结果函数

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
     selectedImageUri = null;
    String filePath = null;
    switch (requestCode) {
        case PICK_IMAGE:
            if (resultCode == Activity.RESULT_OK) {
                selectedImageUri = data.getData();
                // getPath(selectedImageUri);
                launchUploadActivity(true);
                Toast.makeText(this, selectedImageUri.toString(), Toast.LENGTH_SHORT).show();
            }
            break;
        case PICK_Camera_IMAGE:
            if (resultCode == RESULT_OK) {
                //use imageUri here to access the image
                selectedImageUri = imageUri;
                launchUploadActivity(true);
                    /*Bitmap mPic = (Bitmap) data.getExtras().get("data");
                    selectedImageUri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), mPic, getResources().getString(R.string.app_name), Long.toString(System.currentTimeMillis())));*/
            } else if (resultCode == RESULT_CANCELED) {
                Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
            }
            break;
    }

这是我启动上传 Activity 的功能

 private void launchUploadActivity(boolean isImage){
    Intent i = new Intent(LeftMenusMediaActivity.this, UploadActivity.class);
    i.putExtra("filePath", selectedImageUri.getPath());
    i.putExtra("isImage", isImage);
    startActivity(i);
}

这是我的上传 Activity 类

public class UploadActivity extends Activity {
// LogCat tag
private static final String TAG = MainActivity.class.getSimpleName();


private String filePath = null;

long totalSize = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Changing action bar background color
 /*     getActionBar().setBackgroundDrawable(
            new ColorDrawable(Color.parseColor(getResources().getString(
                    R.color.action_bar))));*/

    // Receiving the data from previous activity
    Intent i = getIntent();

    // image or video path that is captured in previous activity
    filePath = i.getStringExtra("filePath");

    // boolean flag to identify the media type, image or video
    boolean isImage = i.getBooleanExtra("isImage", true);

    if (filePath != null) {
        // Displaying the image or video on the screen
        //previewMedia(isImage);
        new UploadFileToServer().execute();
    } else {
        Toast.makeText(getApplicationContext(),
                "Sorry, file path is missing!", Toast.LENGTH_LONG).show();
    }



}

/**
 * Uploading the file to server
 * */
private class UploadFileToServer extends AsyncTask<Void, Integer, String> {
    @Override
    protected void onPreExecute() {
        // setting progress bar to zero
    //  progressBar.setProgress(0);
        super.onPreExecute();
    }

    @Override
    protected String doInBackground(Void... params) {
        return uploadFile();
    }

    @SuppressWarnings("deprecation")
    private String uploadFile() {
        String responseString = null;

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(AppConfig.URL_PHOTO);

        try {
            AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
                    new AndroidMultiPartEntity.ProgressListener() {


                        @Override
                        public void transferred(long num) {
                            publishProgress((int) ((num / (float) totalSize) * 100));
                        }
                    });


            File sourceFile = new File(filePath);
            ;
            // Adding file data to http body
            entity.addPart("image", new FileBody(sourceFile));

            // Extra parameters if you want to pass to server
            entity.addPart("website",
                    new StringBody("www.androidhive.info"));
            entity.addPart("email", new StringBody("abc@gmail.com"));

            totalSize = entity.getContentLength();
            httppost.setEntity(entity);

            // Making server call

            HttpResponse response = httpclient.execute(httppost);

            HttpEntity r_entity = response.getEntity();

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode == 200) {
                // Server response

                responseString = EntityUtils.toString(r_entity);

            } else {
                responseString = "Error occurred! Http Status Code: "
                        + statusCode;
            }

        } catch (ClientProtocolException e) {
            responseString = e.toString();
        } catch (IOException e) {
            responseString = e.toString();
        }

        return responseString;

    }

    @Override
    protected void onPostExecute(String result) {
        Log.e(TAG, "Response from server: " + result);

        // showing the server response in an alert dialog
        showAlert(result);

        super.onPostExecute(result);

    }

}

/**
 * Method to show alert dialog
 * */
private void showAlert(String message) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage(message).setTitle("Response from Servers")
            .setCancelable(false)
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    // do nothing
                }
            });
    AlertDialog alert = builder.create();
    alert.show();
}

要使从画廊上传工作需要进行哪些更改

Answer 1

我的应用程序现在可以运行了。我对我的代码进行了以下更改。

关于 Activity 结果部分

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
     selectedImageUri = null;

    switch (requestCode) {
        case PICK_IMAGE:
            if (resultCode == Activity.RESULT_OK) {
                selectedImageUri = data.getData();
                imagepath = getPath(selectedImageUri);


                launchUploadActivity2(true);
                Bitmap bitmap=BitmapFactory.decodeFile(imagepath);
                iv.setImageBitmap(bitmap);


                Toast.makeText(this, selectedImageUri.toString(), Toast.LENGTH_SHORT).show();
            }
            break;
        case PICK_Camera_IMAGE:
            if (resultCode == RESULT_OK) {
                //use imageUri here to access the image
                selectedImageUri = imageUri;
                imagepath2=selectedImageUri.getPath();
                launchUploadActivity(true);
                Bitmap bitmap=BitmapFactory.decodeFile(imagepath2);
                iv.setImageBitmap(bitmap);
                Log.d(TAG,selectedImageUri.toString());
                Toast.makeText(this, selectedImageUri.toString(), Toast.LENGTH_SHORT).show();

            } else if (resultCode == RESULT_CANCELED) {
                Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
            }
            break;
    }

我制作了两个单独的函数来启动上传 Activity 。 启动上传 Activity 类的函数，用于将图片从图库上传到服务器

    private void launchUploadActivity2(boolean isImage){

    filePath=imagepath;
    if (filePath != null) {
        // Displaying the image or video on the screen
        //previewMedia(isImage);
        new UploadImageToServer1().execute();
    } else {
        Toast.makeText(getApplicationContext(),
                "Sorry, file path is missing!", Toast.LENGTH_LONG).show();
    }
}

上传图片上传到服务器的Activity类函数

    private void launchUploadActivity(boolean isImage){

    filePath=selectedImageUri.getPath();
    if (filePath != null) {
        // Displaying the image or video on the screen
        //previewMedia(isImage);
        new UploadImageToServer().execute();
    } else {
        Toast.makeText(getApplicationContext(),
                "Sorry, file path is missing!", Toast.LENGTH_LONG).show();
    }
}

上传 Activity 类

private class UploadImageToServer extends AsyncTask<Void, Integer, String> {
    @Override
    protected void onPreExecute() {
        // setting progress bar to zero
        //  progressBar.setProgress(0);
        super.onPreExecute();
    }

    @Override
    protected String doInBackground(Void... params) {
        return uploadFile();
    }

    @SuppressWarnings("deprecation")
    private String uploadFile() {
        String responseString = null;

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(AppConfig.URL_PHOTO);

        try {
            AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
                    new AndroidMultiPartEntity.ProgressListener() {


                        @Override
                        public void transferred(long num) {
                            publishProgress((int) ((num / (float) totalSize) * 100));
                        }
                    });


            File sourceFile = new File(filePath);
            ;
            // Adding file data to http body
            entity.addPart("image", new FileBody(sourceFile));

            // Extra parameters if you want to pass to server
            entity.addPart("userid",
                    new StringBody(session.getuid()));


            totalSize = entity.getContentLength();
            httppost.setEntity(entity);

            // Making server call

            HttpResponse response = httpclient.execute(httppost);

            HttpEntity r_entity = response.getEntity();

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode == 200) {
                // Server response

                responseString = EntityUtils.toString(r_entity);

            } else {
                responseString = "Error occurred! Http Status Code: "
                        + statusCode;
            }

        } catch (ClientProtocolException e) {
            responseString = e.toString();
        } catch (IOException e) {
            responseString = e.toString();
        }

        return responseString;

    }

    @Override
    protected void onPostExecute(String result) {
        Log.e(TAG, "Response from server: " + result);

        // showing the server response in an alert dialog


        super.onPostExecute(result);

    }




}

这是在捕获图像时创建特定文件夹路径的功能

/**
 * Creating file uri to store image/video
 */
public Uri getOutputMediaFileUri(int type) {
    return Uri.fromFile(getOutputMediaFile(type));
}

/**
 * returning image / video
 */
private static File getOutputMediaFile(int type) {

    // External sdcard location
    File mediaStorageDir = new File(
            Environment
                    .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
            AppConfig.IMAGE_DIRECTORY_NAME);

    // Create the storage directory if it does not exist
    if (!mediaStorageDir.exists()) {
        if (!mediaStorageDir.mkdirs()) {
            Log.d(TAG, "Oops! Failed create "
                    + AppConfig.IMAGE_DIRECTORY_NAME + " directory");
            return null;
        }
    }

    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
            Locale.getDefault()).format(new Date());
    File mediaFile;
    if (type == MEDIA_TYPE_IMAGE) {
        mediaFile = new File(mediaStorageDir.getPath() + File.separator
                + "IMG_" + timeStamp + ".jpg");
    } else if (type == MEDIA_TYPE_VIDEO) {
        mediaFile = new File(mediaStorageDir.getPath() + File.separator
                + "VID_" + timeStamp + ".mp4");
    } else {
        return null;
    }

    return mediaFile;
}

现在我可以从图库和相机上传